PlantTFDB
Plant Transcription Factor Database
v4.0
Previous version: v1.0, v2.0, v3.0
Musa acuminata
HSF Family
Species TF ID Description
GSMUA_Achr10P25230_001HSF family protein
GSMUA_Achr10P27810_001HSF family protein
GSMUA_Achr10P30120_001HSF family protein
GSMUA_Achr11P10320_001HSF family protein
GSMUA_Achr1P03910_001HSF family protein
GSMUA_Achr1P07880_001HSF family protein
GSMUA_Achr1P16240_001HSF family protein
GSMUA_Achr1P27200_001HSF family protein
GSMUA_Achr2P11880_001HSF family protein
GSMUA_Achr2P15590_001HSF family protein
GSMUA_Achr2P16660_001HSF family protein
GSMUA_Achr2P21640_001HSF family protein
GSMUA_Achr3P06020_001HSF family protein
GSMUA_Achr3P06990_001HSF family protein
GSMUA_Achr3P07020_001HSF family protein
GSMUA_Achr3P15640_001HSF family protein
GSMUA_Achr3P15740_001HSF family protein
GSMUA_Achr3P27600_001HSF family protein
GSMUA_Achr3P31860_001HSF family protein
GSMUA_Achr4P04500_001HSF family protein
GSMUA_Achr4P10060_001HSF family protein
GSMUA_Achr4P17040_001HSF family protein
GSMUA_Achr4P19760_001HSF family protein
GSMUA_Achr4P29100_001HSF family protein
GSMUA_Achr4P30990_001HSF family protein
GSMUA_Achr5P03000_001HSF family protein
GSMUA_Achr5P07840_001HSF family protein
GSMUA_Achr5P15900_001HSF family protein
GSMUA_Achr6P00960_001HSF family protein
GSMUA_Achr6P24430_001HSF family protein
GSMUA_Achr6P27750_001HSF family protein
GSMUA_Achr6P31750_001HSF family protein
GSMUA_Achr7P13040_001HSF family protein
GSMUA_Achr7P18900_001HSF family protein
GSMUA_Achr7P24790_001HSF family protein
GSMUA_Achr8P20520_001HSF family protein
GSMUA_Achr8P27750_001HSF family protein
GSMUA_Achr8P27820_001HSF family protein
GSMUA_Achr8P28330_001HSF family protein
GSMUA_Achr9P00910_001HSF family protein
GSMUA_Achr9P01640_001HSF family protein
GSMUA_Achr9P05660_001HSF family protein
GSMUA_Achr9P15370_001HSF family protein
HSF Family Introduction

Heat stress transcription factors (Hsfs) are the major regulators of the plant heat stress (hs) response. Sequencing of the Arabidopsis genome revealed the existence of 21 open-reading frames (ORFs) encoding putative Hsfs assigned to classes A-C. Here we present results of a functional genomics approach to the Arabidopsis Hsf family focused on the analysis of their C-terminal domains (CTDs) harboring conserved modules for their function as transcription factors and their intracellular localization. Using reporter assays in tobacco protoplasts and yeast as well as glutathione-S-transferase (GST) pull-down assays, we demonstrate that short peptide motifs enriched with aromatic and large hydrophobic amino acid (aa) residues embedded in an acidic surrounding (AHA motifs) are essential for transcriptional activity of class A Hsfs. In contrast to this, class B and C Hsfs lack AHA motifs and have no activator function on their own. We also provide evidence for the function of a leucine (Leu)-rich region centered around a conserved QMGΦL motif at the very C-terminus as a nuclear export signal (NES) of class A Hsfs. Sequence comparison indicates that the combination of a C-terminal AHA motif with the consensus sequence FWxxF/L,F/I/L as well as the adjacent NES represents a signature domain for plant class A Hsfs, which allowed to identify more than 60 new Hsfs from the expressed sequence tag (EST) database.

Kotak S, Port M, Ganguli A, Bicker F, von Koskull-Doring P.
Characterization of C-terminal domains of Arabidopsis heat stress transcription factors (Hsfs) and identification of a new signature combination of plant class A Hsfs with AHA and NES motifs essential for activator function and intracellular localization.
Plant J, 2004. 39(1): p. 98-112.
PMID: 15200645